Tie for box straps



July 17, 1928. A. 1,677,522

L. M. HARVEY TIE FOR BOX STRAPS Filed March 14, 1927 Patented July 17, 1928.

UNITED .STATES PATENT oFFicE.

TIE FOR BOX STRAPS.

Application filed March 14, 1927. I Serial N0. 175,395.

\This invention relates to the construction of a tie for connecting the overlapping ends of flat box bands', such as are employed asl straps applied around the outside of small boxes and shipping cases, to strengthen them and hold their covers in place.

fThe general'object of the invention is to provide a tie of simple construction which can be readily formed by a machine operating upon the overlapping ends of the fiat box band, and which will have a construction Which will effectively prevent the overlapping ends from being pulled apart.

It has been attempted heretofore to form l5 a tie between the overlapping endsof flat box bands by bending the overlapping edges of the bands into a plane substantially at right angles to the plane. of the fiat side of the bands, and in this way forming necks of channel shapedA cross-section, with enlargements at the ends of the necks. However, with that form of tie ^the shoulders at the ends of the necks are necessarily inclined and, when a strain comes upon the band, the shoulder on one band operates in a sense like a wedge to expand thev opposite shoulder` on the other band. e

Further objects of the invention will appear hereinafter.

The invention consists in the novel part-s and combination of parts to be described hereinafter, all of which contribute, to produce an eiiicient tie for box straps. n

A preferred embodiment of the invention is described in the following specification, while the broad scope of the invention is pointed out in the appended claims.

In the dra-wing:

Figure 1 is a perspective of a box having a box band with a tie embodying my invention.

Figure 2 is a. top plan of one of the ties upon an enlarged scale, the `body of the band being broken away.

Figure. 3 is a longitudinal section through the band shown in Figure 2, taken about on the line 3-3'1of Figure 2.

Figures 4 and 5 illustrate stages in the process of forming the tie, Figure 4 being a cross-section showing how the ends of the band are superposed on each other preparatory to rolling them into the coaxial rolls shown in Figures 5 and 6. Figure 5 shows a further stage in the process of forming the rolls, and indicates the manner in which the side edges of the overlapping ends of the band are bent down and l.around to produce the tubular, or roll form of the tie. In this way, tension on the band at the tie tendslto disrupt the tie and cause the overlapping ends of the band to release their grip upon each other. In addition to this, the open channel form of the neck is not adapted to resist the Wedging action referred to above, and hence in such a tie the channels of the necks tendto flatten out under tension.

One of the objects of this invention is to overcome these objections, and to provide a tie in which the overlapping ends interlock with each other. and have such a correlated configuration as will enable the tie to effec-` tively resist relatively great tensile forcesv v opposite to the edges of the metal. In other to provide a configuration and offsets in the superposed walls of therrolls in such a way as to stiifen the rolls and prevent them from opening, and at the same time to form inter locking shoulders which will not tend, under tension in the band, to expand the tie and disrupt it.

Figure 6 is a crossfs'ection taken about'on the line 6-6 of Figure 3, and illustrates the typical cross-section of the tie.

In producing a tie for flat box bands embodying my invention, the overlapping ends of the fiat bands areformed into two rolls ',with the edges of the bands disposed adjacent to\each'other on the 'same s ide of the axis of the rolls, the walls ofthe rollsvon the side of the axis opposite to the said edges having offset portions that operate t9 stifen the rolls to prevent the same from opening and which also form a plurality of inter locking shoulders on the rolls to prevent longitudinal movement of either of the rolls withl respect to the other.

In the drawing,` 1` represents abox provided with a box band 2, shown\with a tie 3, embodying my invention. This tie 3 'is shown in detail in Figures 2, 3 and 6. The tie consists of two coaxial rolls 4 and 5, the. former. of which is produced on the end 6 of Ithe band, and the latter of which is formed on the end.7 of the band. In forming these coaxial rolls, the ends of the band rare overlapped together, as illustrated in Figure 4, and the machine which forms the tie, bends the flat ends around, irst intosubstantially the shape illustrated in Figure 5, andafterwards into the form shown in Figure 6. As the flat ends are bent around in this way, of course, the end 6 which is to form the inner roll 4 will be bent to a roll of smaller diameter than the outer roll 5, and hence when the rolling operation is completed the edges 8 of the inner roll 4 will overlap each other in some such manner as that indicated in Figure 6. -If desired, the edges 9 of the outer roll may abut each other or slightly overlap. However, the rolls are i formed with the edges 8 and 9 lying adjaatially straight or inclined cent to each other and Aon the same side of the longitudinal axis of the rolls. In order to stiien these rlls and prevent lthem'from opening up when the tie is subjected to tensile strains, at the point 10 di- -ametrically opposite to the edges 8 and 9 with respect to the axis of the tie, I provide offset portions in the walls, and these oiset portions no only siien the rolls and prevent their opening, but also produce the interlocking shoulders which I rel upon to prevent one of the rolls from sipping on the other under tension.

In order to accomplish this, the two coaxial rolls are formed by. bending the metal aroundas indicated in Figure 5. I oset the upper sides of the rolls. In doing this,

as to prevent any longitudinal movement of one of the rolls with respect to the other.

An examination of the cross-section shown in Figure 6 will indicate one of the reasons lwhy the odset portions operate -to stili'en the rolls and prevent. their openingup. In

this connection it will be observed that,l

where the inclined faces 14 meet the circusuch vas they angle 17 are formed. These angles give stiHness tol the material and enable it to resist movements tending to open the angle and spread the overlapping I prefer to form a plurality of'oifset por-v tions 11 in the rolls on one side'of Athe vertical plane passing throughthe tie as viewed 1n Figure 6, and I form a plurality of similar odset portions 12 in the walls of the rolls' on the other side of the vertical plane passing through the tie as viewed in Figure 6. The okfset portions 12 are intermediate with respect to the offset portions 11, so

that an alternating or corrugated eiect is produced in the appearance ofthe tie, resulting in the formation o f a plurality of necks 13. The offset portions 11 and 12 may be formed by dies, and they ma have substanaces 14, which are disposed at an angle to each other, the planes of the inclined faces 14 intersecting each other substantially on the vertical axis of the cross-section of the tie (see Figure 6).

By reason of these offset portions, a plurality of shoulders 15 are formed in the outer roll 5 and a plurality of similar oiset shoulders 16 are formed in the, inner roll. These shoulders, being produced at. the same time in the machine, are closely adjacent to each other and interlock with each other so edges 8, 8, or 9, 9, apart.

It is understood that the embodiment of the invention described herein is only one of the many embodiments thisinvention may -lar contour of the body of the rolls, angles I ,75

take, and I do not wish to be limited in the f practice of the invention, nor in the claims, to the particular embodiment set forth.

- What I claim is:

1. A tie for connecting the overlapping 'y ends of flat box bands, consisting of two coaxial rolls with the edges of bands disim 5 posed adjacent to each other on the same side of the axis of the rolls, the walls of said rolls on the side of the axis opposite to the said edges having oii'set portions operating to stiien the rolls to prevent the same from opening, and forming-a luralit of shoulxn n P y ders on the rolls interlocking with each other vent the `same from opening. and forming a plurality of shoulders on the rolls -interlocking with each other to prevent longitudinal movement of one roll with respect to the other. i

3. A tie vfor connecting the overlapping ends of a box band, consisting of two coaxial rolls, the walls ofrsaid rolls having inl wardly oset portions at a plurality of points along their length forminga plurality of shoulders interlocking with each other to prevent relative longitudinal move ment of said rolls.

4. A tie for connecting the overlapping ends of a box hand, consisting of two coaxial rolls, the walls of said rolls having a plurality of inwardly oiset portions on one side along their length, and having a plurality ofinwardly oiset portions at points along their length on. the other'side, the oiset portions on one sidebeing disposedybetween the oiiset portions of the yother side i and forming a plurality of shoulders on `said rolls interlocking with each other.

A the same side ofthe axis of the rolls, the

walls of said rolls having inwardly offset portions at a plurality of points along their length on the opposite side of the axis of the rolls, operating to prevent the rolls from opening, and forming a plurality of shoulders on the rolls, interlocking with each other,l to prevent longitudinal movement of onev roll with respect to the other.

6. A tie for connecting the overlapping ends of a box band, consisting of two c0- axial rolls, the walls of said rolls having inwardly offset portions at a plurality of intermediate points along their length formingla plurality lof shoulders interlocking wit each other to prevent-,relative longitudinal movement of said rolls.

7. A tie forconnecting the overlapping ends of a bo'x band,v consisting of a single roll composed of two coaxial rolls, the 'walls of said rolls having inwardly offset portions' at a. plurality of intermediate ,points along their length forming a plurality of shoulders interlocking 'with Veach other to prevent relative longitudinal movement of said v rolls.

Signed this 7 day of March, 1927.

LEO M. HARVEY. 

